Safety-fuse.



PATENTED DEC. 24, 190? 5. SACHS & P; D, RQYNOLD APPLICATION FILED M.AI\..19,1906. RENEWED MAY 16, 1907 Tl-mi RATTY UNITED STATES PATENT ,onnron.

zrosnrn SACHS AND FRANK n. REYNO cos, or HARTFORD, CONNECTICUT, ASSIGNORS To THE sacns COMPANY, or HARTFORD, oosmze'rrou'r, A CORPORATION or CONNECTICUT.

, -SAFETY-FUSE. 4

Patented Dec. 24, 1907.

Application filed March 19. 1906. Serial No. 306.723. Renewed May 16. 1907. Serial No. 373,980.

. To all whom it may concern:

Be it known that we, Josnrn SACHS and FRANKD. ltnrsows, both citizens of the I United States, and residents of Hartford, in

the county of Hartford and State of (Ionnecticut, have invented an improvement in Safety-Fuses, of which the following is a specification.

' Our invention relates to that class of incIOSedsal'ety fuses in which ilat blade terminalsare employed and are adapted loruse in knife blade or stud bolt contacts. lleretofore. the flat blade contact terminals of fuses of this class have been secured to and maintained within the'end caps thereof in diverse manners, as'have also the connections be tween the fuse strips or the fuse strip terminals and the il'at blade Contact terminals.

fuses of this description, an insulating and non-heat conducting filling material is )mmonly employed and H1 the manufacture of the fuse, due to the manner in which the fiat blade'terminals have been connected to the end ca s,thcre has been no support for the hat b ade contact terminals during the filling been t at the connections between the fuse stri s or thetefminals thereof and the flat bla econtact terminals, are in a large per centage of'instances, injured during the fillmg C erations becauscofthe weight of the fiat b ade Contact terminals and the movement thereof due to their non-support; and efforts to obviate this have made it difficult to ropcrly fill the fuse.

he object of our resent invention is to overcome. the herein efore named dilliculties, and in carrying out the same, we employ a cnsidg, end caps therefor, fiat blade Contact terminals, fuse strip tcrminalselectrically connected to the flat blade terminals and a fuse strip or strips extending between and in electrical connection'with the said fuse stri terminals and means for supporting the at blade terminals in position within rocess and the resultant eileet has tion on the line 11;, x, Fig. 1. Fig. 4 is a cross section illustrating a modified form of our invention. Fig. 5 is a similar section showing a further modification of the invention. Fig. 6 is an enlarged section showing in detail the manner in which the casing, end caps, yoke and fiat blade terminals are connected in the larly to Figs. 1, 2 and 3,a designates a cas-- ing which is preferably cylindrical and made of any suitable insulating material. The casing a is provided with end caps 1) adapted to it over the extremities thereof and to be Socured thereto by suitable holding screws 2 or otherwise, the end caps 11 being provided in their faces with rectangular openings adaptcd to receive the flat blade contact terminals c and through which these terminals are passed.

The adjacent inner ends of the fiat blade contact terminals 0 are preferably of reduced width providing shoulders c" and the reduced ends of the terminals are provided with one or more recesses adaptedto receive the fuse 8}) terminals (Z which are electrically connected thereto in any manner well known in the arts; and also the fuse strip or strips e are connected to their respective fuse terminals d by pins or rivets 3 or otherwise as may be found expedient. 7

We also employ anchor members it pro-. vided with nwardly extending ends it and m. adapted to be received and ,to fit within the ends of the casing a, the faces of the anchors l h coming llush with the ends'of the casing a. We may also employ headless set screws-t which are passed through suitableopenings,

\ in the casing a, and screw threaded openings in the ends it ol the anchors h and into rebeing of such a length that when in position, 10( the headless ends thereof are flush with the surface of the casing a. The shoulders 0 formed by the reduced ends of the terminals c bear against the faces of the anchors h and we prefer to make the recesses m the reduced ends of the flat blade contact terminals of such a dhpth that the bases thereof are approximately in line with the inner face in position, so that in'securing the fuse ter- 5 mine-ls in the said recess, the solder or other material employed 11). making the joint, may

be slightly spread on the inner surface of the '10 minal in and to the anchor.

forms thereof may be employed without departing from the nature and spirit of our inof the ad acent anchor when the terminal is rcntion.

\\'e claim as our invention: 1. A safety fuse comprismga casing, end

caps therefor, ila-t blade contact terminals, 8.

I fuse strip electrically connected to thefiat 831d anchor as indicated at d, l 15:. 2, to additionally secure the flat blade contact teri t It will be manifest that in the. fuse construction hereinbefore described, the parts may be assembledindependently of the en 1 capsm such a manner that the flat blade Q may be placed within the casing, and this without the slightestmovement of the upper fiat blade contact ternnnal, the same being securely maintained in position by the setscrews'i that contact therewith, and its heap ing within the opening of the anchor It, after which of course the other end cap b may be placed'and secured in position to complete an the safety fuse.

Referring to Fig. 4-, it will be apparent that instead of em loying the set screws i,\we may without eparting from the nature and spirit of our invention, make use of pins t" which ass in diametrically opposite positions t oughthe casing a and holes in the inwardly extending ends It of the anchors Iiv into the recesses in the narrow sides ol'dhc fiat blade contact terminals adapted to re- 40 ceive the same; or indicated in Figs. 5 and 6, the set screws i may be so placed that the heads thereof project centrally into an opening of larger diameter in the casing 41, the heads coming flush with the surface thereof, 4 in which instance it will be necessary to provide the end of the shank of each holding screw 2 with a suitable central rcccssmlapted to receive the end of one of l he set screws the holding screws 2 being screwed down against the projecting end ll of an anchor h. whercby it \'.ill be manifest that the parts are 1 .doubly secured nrposnion, or as shown in Fig. 7, to ell'ect the same result, the sct screw 'i may be of larger diameter and the head 5 thereof provided with a central circular rce l cess adapted toJecctVc. tlushank ol the ll()l(l- 5 ing screw 2. It is to be understood that thc term anchor as l1ercinl efore employed, is lo be construed as meaninp generically a device or dc- Viccs by which the llat bladc contact lcrminals are secured in and to the casing ludcpendently of the emlcaps, inasmuch as we do i not hunt ourselves to the an hor lHIlHl;

shown and described as other and equivalent blad terminals, and means passing through the walls of the casing but not through the endcaps and engaging the fiat'blade terrnie nals to ma ntain the same in position w thin the casing independent of the said end caps.

2. A safety fuse comprising a casing, end

caps therefor, flat blade contact terminals, a fuse strip electrically connected to the flat blade terminals, means independent, of the said end caps and co-acting with'the flat blade terminals to position the'same, and

means passing through the walls of the casing; but not through the end caps andengaging the llat blade terminals to maintain the same in position within the casing independent of the said end caps.

- 3. A safety fuse comprising a casing, end caps therefor, flat blade contact terminals, a fuse strip electrically connected to the flat blade terminals, means independent of the said end caps for co-acting with the flat bladeterminals to position the same, means passing through the walls of the casing but not through the end caps and engaging the flat blade terminals to maintain the same in position within the casing independent of the said end caps, and means for securing the end caps in positionon the casing.

4. A safety fuse comprising a casing, end caps therefor, flat blade contact terminals, a fuse stri) lectrically connected to the said llat bla e terminals and extending between the same, means independent of the end caps for co-actihg with the flat blade terminals to position the same, and means eo-acting'with the walls of the casing and independent of the end caps and engaging the flat blade terminals to maintain the same in position within the casing and independentof the said end HELPS. I

' A safety fuse comprising a casing, end caps therefor, llat blade contact terminals, [use terminals electrically connected to the Hat. blade terminals, a fuse strip electrically conucclcd to the said fuse terminals and extending between the same, an anchor having inturncd ends received within the end of the casm; and extending across the same, and means passing through the walls of the casine, through the inturned ends of the anchor swans flat ljrl connectz-nl to the we fuse terminals, and exlienllin lmtween the same, snclxcrs having inturned. Cfltlfi: received Within the ends of the casing, and y "OVllllGLl with scrcwthrcaclcsl cu nngs anal ext-cm? k 11, mass the sznne, set sslng through 0 .enings in the Walls lug, fl; screw threaded 0 innings in. the intumcnl oi the zntachcrs and against the ymliww (ll-3S of the fist lwlm'le terminals to clamp and. maintain. the list blade terminals in position witllnl the casing; independent of the end caps, and. scre. missing through the into the inturned ends the enclnn's i'c'x' msintsining the end caps in. position on. tl'le casing.

8. A. safety l'nse comprising; a. casing, end caps therefor, contact terminals, a {use strip nlrieslly cenn. ted to said con sect term? end. caps, and cesin l1.

nals, anchors for said contact terminals, and means for securing the said anchors within the casing independently of the end caps.

9. A. safety use comprising a casing, end caps therefor, ecntect terminals, a fuse strip electrically ccnnected to said contact tenmnsls, iLHCllOES for said contact terminals, end means securing the saint anchors and con tact terminals tc the ens-lug independently of the eml v 10 A s fety {use comprising e casing, end caps thereler, fist blade contact terminals, {use stz'ip electrically ecnncctecl to the fist blade terminals, eml means engaging the fiat.

blade terminals 'tc maintain the same in p0-- siticn vithin the casing independent of the said end csps.

31. A safety fuse comprising a casing, end csps therefor, at blade contact blade terminals, a {use strip electricelly ccnnected. t0 the fist blade termin els, and means enacting with the said ceasing for securing the seid fist blade ccntsct temnin to the seine independently of the said end.

Signal by us this second clay of March v n all-lens. ll Hm; n REYNGLDS.

Witnesses "1 W c i THAN A LL55 N;

A. N u Sense,

@AROLEIEE 

